Dried Kidney Beans: US Cups to Grams (g) & Cooked Volume Conversion
Convert volumes of dried kidney beans measured in US cups to their approximate weight in metric grams (g) and estimate the resulting cooked volume.
US Cups (Dried Kidney Beans)
Grams (g) (approx.)
Cooked Volume (US Cups) (approx.)
1/4 cup
45-50 g
~3/4 cup to 1 cup
1/3 cup
60-67 g
~1 cup to 1 1/3 cups
1/2 cup
90-100 g
~1 1/2 cups to 2 cups
1 cup
180-200 g (often ~180g or 185g)
~2 1/2 to 3 cups
Important Considerations for Dried Kidney Beans:
The weight of 1 US cup of dried kidney beans is typically around **180-200 grams** (approximately 6.3-7 ounces).
Dried kidney beans generally expand to about **2.5 to 3 times their original volume** when soaked and cooked.
**Important Safety Note:** Dried kidney beans (especially red kidney beans) contain a toxin called phytohaemagglutinin. They MUST be soaked for at least 5 hours (preferably overnight, changing water) and then boiled vigorously for at least 10 minutes to destroy the toxin before simmering until tender. Slow cookers may not reach a high enough temperature to destroy the toxin if beans are not boiled first.
For accuracy in recipes, especially when scaling, measuring by weight is recommended.